Round: 1
| Austrian Pro Series Singles | 2020/05/30 11:20 | Dennis Novak v Erler, Alexander | 7-6,5-7,6-2 |
| ITF - M15 Héraklion | 2020/03/06 08:30 | Erler, Alexander v Lebedev, Alexander | 3-6,3-6 |
| ITF - M15 Héraklion | 2020/03/05 10:20 | Erler, Alexander v Ioannis Xilas | 7-6,6-4 |
| ITF - M15 Héraklion | 2020/03/04 08:30 | Erler, Alexander v Sean Hodkin | 6-2,6-1 |
| ITF - M25 Trente | 2020/03/01 09:25 | Bemelmans, Ruben v Erler, Alexander | 4-6,6-2,6-4 |
| ITF - M25 Trente | 2020/02/29 12:00 | Ocleppo, Julian v Erler, Alexander | 4-6,2-6 |
| ITF - M25 Trente | 2020/02/28 11:55 | Raul Brancaccio v Erler, Alexander | 1-6,7-6,1-6 |
| ITF - M25 Trente | 2020/02/27 13:55 | Erler, Alexander v Daniel Masur | 7-6,7-6 |
| Austrian Pro Series Singles | 2020/05/29 09:30 | Weissborn, Tristan v Lukas Neumayer | 6-7,6-7 |
| Austria Bundesliga | 2019/09/07 15:00 | Weissborn, Tristan v Mirnegg, Marco | 6-3,4-6,5-7 |
| Shenzhen, China, Qualifying | 2018/03/11 01:30 | Andrea Vavassori v Weissborn, Tristan | 7-6,6-3 |
| Challenger Zhuhai Qual | 2018/03/03 04:15 | Yusuke Takahashi v Weissborn, Tristan | 7-6,4-6,6-3 |
| Challenger Brescia Qual | 2017/11/11 12:45 | Weissborn, Tristan v Giovanni Fonio | 6-7,0-6 |
| Challenger Bratislava Qual | 2017/11/04 15:15 | Farquharson, Tom v Weissborn, Tristan | 6-3,6-0 |
| Challenger Anning Qual | 2017/04/23 03:20 | Soonwoo Kwon v Weissborn, Tristan | 6-7,2-6 |
| Challenger Anning Qual | 2017/04/22 06:10 | Weissborn, Tristan v Guo, Zhu | 6-0,6-2 |